1224214151 has 4 divisors (see below), whose sum is σ = 1242486072. Its totient is φ = 1205942232.

The previous prime is 1224214093. The next prime is 1224214157. The reversal of 1224214151 is 1514124221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224214151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224214157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9135860 + ... + 9135993.

It is an arithmetic number, because the mean of its divisors is an integer number (310621518).

Almost surely, 2^1224214151 is an apocalyptic number.

1224214151 is a deficient number, since it is larger than the sum of its proper divisors (18271921).

1224214151 is an equidigital number, since it uses as much as digits as its factorization.

1224214151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18271920.

The product of its digits is 640, while the sum is 23.

The square root of 1224214151 is about 34988.7717846740. The cubic root of 1224214151 is about 1069.7586292835.

Adding to 1224214151 its reverse (1514124221), we get a palindrome (2738338372).

The spelling of 1224214151 in words is "one billion, two hundred twenty-four million, two hundred fourteen thousand, one hundred fifty-one".